AX78120

USB 2.0 to Multi I/O (1S or 2S) Controller

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Overview

With the rapid proliferation of USB interface in the embedded world, developers are looking for easiest ways to add USB to microcontroller-based applications in their design. ASIX’s new AX781x0 family features four USB connectivity bridge solutions including USB 2.0 to Single Serial (AX78120), USB 2.0 to Dual Serial (AX78120), USB 2.0 to Quad Serial (AX78140) and USB 2.0 to Dual Serial and Single Parallel (AX78140) controllers. Enabling smooth migration from legacy system using ASIX’s MCS78x0 series, AX78120/AX78140 provide pin-to-pin compatible and driver backward compatible with MCS7810/MCS7820/MCS7840.

Features

● Single chip USB 2.0 to Multi I/O (1S or 2S) Controller
● USB Device Controller
-- Integrates on-chip USB 2.0 PHY and controller compliant to USB Spec 2.0 and 1.1
-- Supports all USB 2.0 power saving modes (L1, L2)
-- Supports USB High/Full Speed modes with Bus-power or Self-power device auto-detect capability
-- Supports USB LPM (Link Power Management)
● Dual Serial Port Controller
-- Two 16c450/16c550 compatible UARTs
-- Supports SIR IrDA mode on any/all ports
-- Supports RS-232, RS-422 and RS-485 serial ports
-- Supports multi-protocol serial transceivers
-- Supports 5, 6, 7 & 8 bit serial data
-- Supports automatic data direction control
-- Supports multi-drop mode with auto address detection
-- Supports hardware and software flow control
-- Supports baud rates from 50bps to 6Mbps
-- Supports custom baud rates from external clock
-- On-Chip 1024-Byte FIFO for upstream and 512-Byte for downstream data transfer for each Serial Port
-- I2C interface for EEPROM
-- Supports read/write EEPROM through USB interface
-- On-Chip buffers for serial port signals to operate without external transceivers over short cable
-- Pin-to-Pin compatible with MCS7810/MCS7820/MCS7840
-- Driver backward compatible with MCS7810/MCS7820/MCS7840
● Support Remote Wake Up Function
-- Supports Suspend Mode and Remote Wakeup via RXD, RI, DSR, DCD and CTS pin
● Advanced Power Management Features
-- Supports USB LPM (Link Power Management)
-- Supports remote wake up re-trigger
● Integrates on-chip 1.8V and 3.3V voltage regulator and only requires a single 5V power supply
● Single 12MHz clock input from either crystal or oscillator source
● Integrates on-chip power-on reset circuit
● Small form factor with 48-pin LQFP RoHS compliant package
● Operating over 0°C to 70°C or -40°C to +85°C temperature range

Target Applications

Serial Attached Devices
Serial Networking / Monitoring Equipment
Data Acquisition System
POS Terminal & Industrial PC

Diagram

Development Board

Available
Available

AX78120 USB 2.0 to 2S Demo Board (AX78120-DMB-2S-1)

This is an AX78120 USB 2.0 to 2S adapter for users to evaluate AX78120 USB 2.0 to 2S functionalities.

FAQs

Hardware Design Considerations

  • Is AX78120 IC pin-to-pin compatible to MCS7820 IC?

    Yes, AX78120 IC is pin-to-pin compatible to MCS7820 IC.

  • Where can I obtain the latest AX78120 datasheet, reference schematic and other hardware design archives?

    Please register MyASIX membership and then download the latest AX78120 datasheet, reference schematic, PCB layout guide, etc. from AX78120 Product web page directly.

  • Can ASIX help me to review my own AX78120 schematic and PCB layout?

    Yes, please deliver your own AX78120 schematic and PCB layout files to ASIX’s Support (support@asix.com.tw) for further review before making your own AX78120 PCB board.

  • Is the I2C EEPROM required for AX78120 2S applications?

    The I2C EEPROM is optional for AX78120 2S applications.

  • How to program AX78120 I2C EEPROM in-circuit?

    The AX78120 supports a Windows EEPROM Utility to program the I2C EEPROM in-circuit.

  • Does ASIX support RS-232/RS-485 transceivers solutions?

    Yes, ASIX also supports different RS-232/RS-485 transceivers solutions. Please visit ASIX UART Transceivers/EL Drivers Products Web page for more details.

Software Design Considerations

  • Can AX78120 install the original MCS7820 drivers directly?

    Yes, you should be able to install the original MCS7820 drivers on AX78120 applications directly. If you have any problems, please download the latest AX781x0 drivers from AX78120 Driver Download web page instead. The latest AX781x0 drivers supports all AX78140/AX78120/MCS7840/MCS7820/MCS7810 applications.

  • Where can I obtain the latest AX78120 drivers?

    Please visit AX78120 Driver Download web page to download proper drivers for your AX78120 target applications.

  • How to change the COM port number of AX78120?

    Yes, we can change the COM port number by using a drop down list located in AX78120 Windows COM Port Properties. To change the COM port number, go to "COM Port Properties => Features => COM Port Number".

Download

Technical Documentation

Product Brief, Product Introduction and Datasheet

AX78120 Product Brief

Release Date
2017-12-08

File Size
316.6 KB

AX78120 Product Introduction

Version
1.00

Release Date
2017-03-14

File Size
1.1 MB

AX78120 Datasheet

Version
1.11

Release Date
2018-08-03

File Size
863.5 KB

Reference Manuals and User Guides

AX78120 EEPROM User Guide

Reports

AX78120 Reliability Report

AX78120 RoHS Report

Hardware Design Documentation

Reference Schematics

AX78120 USB 2.0 to 2S Demo Board Reference Schematic

Version
1.00

Release Date
2016-04-26

File Size
253.7 KB

AX78120 USB 2.0 to 1S Reference Schematic

Version
1.10

Release Date
2016-05-26

File Size
254.6 KB

Bill of Materials, Application Notes and Layout Guides

AX78120 USB 2.0 to 2S Demo Board BOM File

Release Date
2016-06-22

File Size
190.3 KB

AX78120 USB 2.0 to 1S Schematic BOM File

Release Date
2016-07-18

File Size
189.3 KB

AX78120 Application Design Note

Version
1.00

Release Date
2016-06-24

File Size
1,020.4 KB

PCB Layout, Gerber and IBIS Model

AX78120 USB 2.0 to 2S Demo Board PCB Layout Files

Release Date
2016-02-25

File Size
217.3 KB

AX78120 USB 2.0 to 2S Demo Board Gerber Files

Release Date
2016-02-25

File Size
837.3 KB

AX78120 IBIS Model

Release Date
2016-09-14

File Size
391.1 KB

Software & Tools

Drivers

Linux kernel 4.x/3.x/2.6.x Driver

For all Android systems, Linux kernel 2.6.15 and later

Version
3.4.0

Release Date
2018-09-28

File Size
32.2 KB

Windows 10 32-bit Driver

For x86 CPU platform, HLK/WHCK certified

Version
3.20.7.0

Release Date
2020-06-24

File Size
880.1 KB

Windows 10 64-bit Driver

For x64 CPU platform, HLK/WHCK certified

Version
3.20.7.0

Release Date
2020-06-24

File Size
981.1 KB

Windows 8.x 32-bit Driver

For x86 CPU platform, HLK/WHCK certified

Version
3.18.6.0

Release Date
2018-11-14

File Size
898.2 KB

Windows 8.x 64-bit Driver

For x64 CPU platform, HLK/WHCK certified

Version
3.18.6.0

Release Date
2018-11-14

File Size
1.0 MB

Windows 7/Vista/XP 32-bit Driver

For x86 CPU platform, WHCK certified

Version
3.12.6.0

Release Date
2018-11-14

File Size
1.1 MB

Windows 7/Vista/XP 64-bit Driver

For x64 CPU platform, WHCK certified

Version
3.12.6.0

Release Date
2018-11-14

File Size
1.2 MB

Utilities

Windows EEPROM Utility

Windows MP Tool